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<h1 class="topictitle1">Configuring the DNS Service</h1>
<div><p>After connecting the <span>OceanProtect</span> to the DNS server, external domain names can be resolved and accessed.</p>
<div class="section"><h4 class="sectiontitle">Prerequisites</h4><ul><li>The DNS server has been configured and is running properly.</li><li>TCP/UDP port 53 between the <span>OceanProtect</span> and DNS server is enabled.</li></ul>
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<div class="section"><h4 class="sectiontitle">Context</h4><ul><li>A DNS server is used to resolve and access external domain names.</li><li>If you want to configure a standby DNS server, keep the domain names of the active and standby servers consistent.</li></ul>
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<div class="section"><h4 class="sectiontitle">Procedure</h4><ol><li><span>Choose <span class="uicontrol" id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_en-us_topic_0000001311295305_en-us_topic_0000001149078659_uicontrol1098185683619"><b><span id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_text157651936143415"><strong>System</strong></span> &gt; <span id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_text49601653123416"><strong>Infrastructure</strong></span> &gt; <span id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_text112401684352"><strong>Cluster Management</strong></span></b></span>.</span></li><li><span>In the <span class="uicontrol" id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_uicontrol1050641575312"><b><span id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_text133861121163513"><strong>Local Cluster Nodes</strong></span></b></span> area of the <span class="uicontrol" id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_uicontrol13691645105219"><b><span id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_text1763193125313"><strong>Backup Cluster</strong></span></b></span> tab page, click the node name.</span></li><li><span>In the <span class="uicontrol" id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_uicontrol1144724616332"><b><span id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_text51761646203516"><strong>Node detail</strong></span></b></span> dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_uicontrol1544714611335"><b><span id="EN-US_TOPIC_0000001897309002__en-us_topic_0000001839143213_text1624910583612"><strong>Open the device management platform</strong></span></b></span> to go to DeviceManager.</span></li><li><span>Choose <strong>Settings</strong> &gt; <strong>Basic Information</strong> &gt; <strong>DNS Service</strong>.</span></li><li><span>Click <strong>Modify</strong> in the upper right corner of the <strong>Management DNS</strong> area to configure the DNS service for the management plane.</span></li><li><span>Set <strong>Active DNS IP Address</strong>.</span><p><ol type="a"><li>(Optional) Set <strong>Standby DNS IP Address 1</strong>.</li><li>(Optional) Set <strong>Standby DNS IP Address 2</strong>. Set <strong>Standby DNS IP Address 1</strong> first and then <strong>Standby DNS IP Address 2</strong>.</li><li>(Optional) Test the connectivity between the DNS server and the storage system.<ul><li>You can click <strong>Test</strong> next to a DNS IP address to test its availability.</li><li>You can click <strong>Test All</strong> to test the connectivity between the DNS server and storage system.</li></ul>
</li><li>Click <strong>Save</strong>.</li></ol>
</p></li></ol>
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